The FAT20S900-MBL 48V folding fat bike features both pedal assist and throttle mode. Equipped with comfortable but compact 20" x 4" tires, the FAT20S900-MBL series can be conveniently folded in order to store and transport the bike more easily. It has the ability to take on many tasks you would not expect from a Portable &folding bikes such as hauls from the grocery store, challenging terrain, and rough roads all without breaking a sweat. Explore new roads. Specifications MODEL SIZE 1780'620'1120mm MOTOR Rear Hub 48V 500W BATTERY 48V 13AH CHARGING TIME 5-8 Hours DISPLAY Ecotric Smart LCD SENSOR Speed Sensor BATTERY LIFE 400-600 Cycles REAR BRAKE Mechanical Disc 160mm Rotor RECOMMENDED RIDER 5'1"--5'9 Refer To (The Size Guide) FUNCTIONS Pedal Assist On-Demand Throttle FRAME Aluminum Alloy TIRES 20''4.0'' Fat Bike Tires FENDERS Included, Front And Rear WEIGHT WITH BATTERY 52lb WEIGHT CAPACITY 200lbs DERAILLEUR 7Speed SHIMANO FRONT BRAKE Mechanical Disc 160mm Rotor BRAKE SYSTEM Left Brake For Rear/Right Brake For Front